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Today's OutagesOn Monday, December 01, 2008 at 05:36:28 PM: There are no known outages in the SPH Computing Services environment. If you are experiencing problems, please send e-mail to sph.help@umich.edu or call our help desk at 936-1247. Help desk hours are 8AM to 5PM Monday through Friday. For campus-wide information, please see the ITCS service status items listed below. Recent AnnouncementsWednesday May 14, 2008 Due to a significant security problem with the openssl package included with debian linux, updates to openssl have been applied to all SPH-supported linux systems. This will prevent any new keys generated on these systems from being vulnerable. Any keys that were generated using the vulnerable version of openssl will cause the application using those keys to be vulnerable to brute-force attacks because the number of possible keys is very small. This means that systems using the vulnerable keys cannot reliably verify identities and cannot reliably protect encrypted content. Because of these problems, new ssh host keys have been generated for some systems. This may result in some problems for people who connect to these systems with ssh. When an ssh client connects to a system for the first time, it saves a copy of the host key for that system so that it can recognize the system next time a connection is established. If the host key changes on the remote system, the next time the ssh client connects, it warns the user that something is wrong. The following systems had vulnerable keys and have had new ssh host keys generated: biaoz-lnx compute17 fossa iff lobe nora patricia shakegenome stria When connecting to these systems using ssh, you may see a warning message indicating that the host key has changed, the host's identity cannot be verified, and something bad may be happening. Depending on what software is being used, you may be asked whether to accept the new key. If you are using the command-line openssh client on linux & unix systems, you may need to edit your ~/.ssh/known_hosts file and remove the entry for the re-keyed host before you can connect to the host. Please contact the SPH Informatics & Computing Services help desk at 936-1247 or sph.help@umich.edu if you have any questions or concerns. References: http://wiki.debian.org/SSLkeys http://www.debian.org/security/2008/dsa-1571 Posted by Kevin Cheek, Security and Systems Administrator Current ITCS Service Status[open] Telephones/VoiceMail: Dearborn Voice Services - The Dearborn campus is experiencing difficulties receiving phone calls from off campus. Either the incoming caller is hearing a fast busy signal or all circuits are busy recording. ITCom has escalated the degradation with our telephone vendor to have service restored as soon as possible. We are sorry for the inconvenience
[open] NetStorage (webDAV file access) and iManager (admin utility): Maintenance on ITCS NetWare Server, ORVILLE - There will be a brief interruption in web services for the MyServer service (NetStorage remote file access and iManager).
[open] DWG, FFA, Spectrum, Internal ITCom server mgmt: ITCom ESX 3.5 Patches (U3) - Affected virtual servers will be unavailable for portions of the upgrade.
[open] Statistics and Computation Service: Statistics and Computation Service Stat/Transfer license expiration - The Stat/Transfer program will only function in trial mode until the license is renewed.
[open] Statistics and Computation Service: Statistics and Computing Service Machine Outage - The machine gauntlet.gpcc.itd has suffered a disk failure that has caused the machine to be unusable. It has been powered off and removed from the SCS machine pool until its disk can be replaced.
UM Wireless, UM VPN: Connectivity (within U-M), Connectivity (external to U-M): UMnet Routing and Wireless/VPN authentication maintenance - Internet connectivity for the UMnet backbone (but NOT CAEN or UMHS) will be briefly interrupted as network connections are readdressed.
Authentication for UM Wireless and VPN services will be slow and/or won't work while we replace one of the authentication servers.
TACACS/RADIUS-based login access to UMnet backbone, distribution and access-layer network hardware will be slow but should still work during the server swap.
Connectivity (within U-M), Connectivity (external to U-M): UM Wireless Network/MWireless Maintenance - We will be upgrading equipment in the UM Wireless Network and MWireless networks on Friday. The networks will be unreachable for a period of time during the maintenance.
IMAP E-mail: IMAP central database problems - Some users are currently unable to access their ITCS IMAP email accounts. Only a small number of users are affected. It appears that this problem began just after 7pm. No mail has been lost. We are working to restore the database to a consistent state as soon as possible.
Mail access was restored for all users at 12:50am. During the database repair process from 11:50pm-12:50am there was a brief window where some incoming messages for affected users may have been bounced. In this case the sender will receive a bounce message. Mail delivered between 7 and 11:50pm was queued and delivered after service was restored.
Any users having ongoing problems with their ITCS IMAP accounts should contact 764-HELP or online.consulting@umich.edu.
ITCS Exchange: ITCS Exchange Service - While troubleshooting todays service outage, it was discrovered that the Cluster holding ECLUST2-VS3 and ECLUST2-VS4 is experiencing issues and needs to be rebooted. During this period of time, users with mailboxes on these servers will be unavailable. Microsoft is anticipating only a reboot being necessary, but additional time to troubleshoot these issues may be required and the Emergency Maintenance Window is being scheduled accordingly.
If you have any questions or concerns, please contact exchange.supoort@umich.edu.
[open] ITCS Exchange: ALDC Row F - Update Power CDU firmware in Rack 6 - No impact. Power CDU firmware update does not restart power outlets. This is regular maintenance on power CDUs in ALDC Row F.
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